Question

X x 4/5 +3 = 12 và 1/4

Answer 1

=>4/5x=12+1/4-3=9+1/4=9,25

=>x=185/16

Answer 2

x \(\times\) 4/5 + 3 = 49/4

x \(\times\) 4/5 = 37/4

x = 37/4 : 4/5 = 37/4 x 5/4 = 185/16

 

Answer 3